Where does “guillotine shears” come from?

guillotine shears (English) comes from English guillotine, from French guillotine, from French Guillotin, from French Guillot, from French Guillaume, from Old French Guillaume, from Frankish Willahelm, from Proto-Germanic Wiljahelmaz — to pierce, strike; to stick; prick; stab.

guillotine shears (English): A heavy-duty machine for cutting thick materials with a straight, downward blade motion for high precision

Definitions

  1. A heavy-duty machine for cutting thick materials with a straight, downward blade motion for high precision

Ancestry of “guillotine shears”, step by step

guillotine shears traces back through two separate lines of ancestry.

via English guillotine

StepLanguageWordMeaning
1EnglishguillotineA machine used for the application of capital...
2Frenchguillotineguillotine; first-person singular present...
3FrenchGuillotinGuillotin
4FrenchGuillot
5FrenchGuillaumeWilliam
6Old FrenchGuillaume
7FrankishWillahelmWilliam
8Proto-GermanicWiljahelmaz
9Proto-Germanichelmazhelmet
10Proto-Germanichalmazhalm; stem; stalk; straw; hay
11Proto-Indo-Europeanḱolh₂mosstalk
12Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab

via English shears

StepLanguageWordMeaning
1Englishshearsplural of shear; A tool consisting of two blades...
2EnglishshearTo cut, originally with a sword or other bladed...
3Middle EnglishschyreAlternative form of shire; bright, shimmering,...
4Old Englishsċīrbright; shire; county
5Old Englishburnastream
6Proto-West Germanicbrunnōwell, spring
7Proto-Germanicbrunnôsource; wellspring; fountain; brook; stream;...
8Proto-Indo-Europeanbʰréh₁wr̥well, spring, source
9Proto-Indo-Europeanbʰrewh₁-to boil; to brew
10Proto-Indo-Europeanbʰer-to bear, carry
Every word from Proto-Indo-European ḱelh₂-Every word from Proto-Indo-European ḱolh₂mosEvery word from Proto-Germanic halmaz